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Choi HK, Choi YJ, Choi YD, Rha KH, Kim JH, Kim DK.Choi HK, et al. Among authors: choi yd, choi yj.Yonsei Med J. 2002 Feb;43(1):1-6. doi: 10.3349/ymj.2002.43.1.1.Yonsei Med J. 2002.PMID: 11854924Free article.
Yang WJ, Kim DS, Im YJ, Cho KS, Rha KH, Cho NH, Choi YD.Yang WJ, et al. Among authors: choi yd.Urology. 2005 May;65(5):972-5. doi: 10.1016/j.urology.2004.12.010.Urology. 2005.PMID: 15882734
Yang WJ, Cho KS, Rha KH, Lee HY, Chung BH, Hong SJ, Yang SC, Choi YD.Yang WJ, et al. Among authors: choi yd.Urology. 2006 Aug;68(2):324-7. doi: 10.1016/j.urology.2006.02.015.Urology. 2006.PMID: 16904445
Lee YS, Han WK, Oh YT, Choi YD, Yang SC, Rha KH.Lee YS, et al. Among authors: choi yd.Yonsei Med J. 2007 Apr 30;48(2):341-6. doi: 10.3349/ymj.2007.48.2.341.Yonsei Med J. 2007.PMID: 17461539Free PMC article.
Lee MS, Oh YT, Han WK, Rha KH, Choi YD, Hong SJ, Yang SC, Kim KW.Lee MS, et al. Among authors: choi yd.AJR Am J Roentgenol. 2007 Nov;189(5):W264-71. doi: 10.2214/AJR.07.2542.AJR Am J Roentgenol. 2007.PMID: 17954623Review.
Park SY, Jeong W, Choi YD, Chung BH, Hong SJ, Rha KH.Park SY, et al. Among authors: choi yd.Yonsei Med J. 2008 Dec 31;49(6):897-900. doi: 10.3349/ymj.2008.49.6.897.Yonsei Med J. 2008.PMID: 19108011Free PMC article.
Ham WS, Park SY, Rha KH, Kim WT, Choi YD.Ham WS, et al. Among authors: choi yd.J Laparoendosc Adv Surg Tech A. 2009 Jun;19(3):329-32. doi: 10.1089/lap.2008.0344.J Laparoendosc Adv Surg Tech A. 2009.PMID: 19397390
Cho KS, Choi HM, Koo K, Park SJ, Rha KH, Choi YD, Chung BH, Cho NH, Yang SC, Hong SJ.Cho KS, et al. Among authors: choi yd, choi hm.J Korean Med Sci. 2009 Aug;24(4):674-8. doi: 10.3346/jkms.2009.24.4.674. Epub 2009 Jul 29.J Korean Med Sci. 2009.PMID: 19654951Free PMC article.